1202.4223 (Claudio De Conti et al.)

Nonmesonic Weak Decay Spectra and Three-Nucleon Emission    [PDF]

Claudio De Conti, Airton Deppman, Franjo Krmpotić

We have evaluated the nonmesonic weak decay spectra within the
independent-particle shell-model, and compared them with the recent
measurements of: i) the single and double coincidence nucleon spectra in
${\mathrm{^{12}_{\Lambda}C}}$ performed at KEK, and ii) proton kinetic energy
spectra in ${\mathrm{^{5}_{\Lambda}He}}$, ${\mathrm{^{7}_{\Lambda}Li}}$,
${\mathrm{^{9}_{\Lambda}Be}}$, ${\mathrm{^{11}_{\Lambda}B}}$,
${\mathrm{^{12}_{\Lambda}C}}$, ${\mathrm{^{13}_{\Lambda}C}}$,
${\mathrm{^{15}_{\Lambda}N}}$ and ${\mathrm{^{16}_{\Lambda}O}}$ done by FINUDA.
Based on this comparison we argue that the extraction from the data of the
three-body $\Lambda NN \rightarrow nNN$ induced decay rate, as done in these
works, could be questionable.

View original: http://arxiv.org/abs/1202.4223